What makes It's Raining by Rain notable?

The album features the hit title track 'It's Raining', which became a defining song for Rain and helped him gain international recognition. Its commercial success propelled Rain to stardom, earning multiple awards and contributing to the Hallyu wave that popularized K-pop globally. When 'It's Raining' was released in January 2004, Rain was rapidly rising in popularity following his debut album 'Bad Guy' in 2002. This album marked his transition into mainstream success, solidifying his status as a leading figure in the K-pop scene.